Mitchell named to Enogex Holdings Board

                   Mitchell named to Enogex Holdings Board

PR Newswire

OKLAHOMA CITY, Dec. 6, 2012

OKLAHOMA CITY, Dec. 6, 2012 /PRNewswire/ --OGE Energy Corp. (NYSE: OGE)
Chairman, President and CEO Pete Delaney today announced the appointment of
Enogex Holdings LLC President Keith Mitchell to the Enogex board of


Mitchell will fill the seat being vacated by former OGE Energy Chief Operating
Officer Dan Harris. Harris retired from his day-to-day responsibilities with
OGE Energy at the end of 2011 but has remained in an active consulting role
with the company and as a member of the Enogex board.

"Keith's appointment to the Enogex board is a natural extension of his
leadership responsibilities," Delaney said. "He continues to demonstrate the
leadership necessary to shepherd Enogex during a time of significant growth
and will be a valued addition to the board as that growth continues."

Mitchell was named president of Enogex in September 2011 after having served
as chief operating officer at Enogex since 2007.

At the end of 2012, Harris's one year consulting engagement with OGE and Board
assignment at Enogex will be complete.

"I have great admiration and respect for Dan and his leadership. It has
proven invaluable to our company," Delaney said. "I want to thank him not
only for his service to OGE throughout his career, but also for this year of
transition service. We wish him the best."

In addition to Delaney and Mitchell, the Enogex Holdings LLC board includes
Sean Trauschke, Chief Financial Officer of OGE Energy, and Robb Turner, Senior
Partner and co-founder of ArcLight Capital Partners.

Enogex is a subsidiary of OGE Energy Corp. (NYSE: OGE) with minority interests
held by affiliates of ArcLight Capital Partners, LLC. Together with its
subsidiaries, Enogex owns and operates more than 8,700 miles of gathering and
transportation pipeline, nine processing plants and 24 billion cubic feet of
natural gas storage capacity in Oklahoma and Texas. It has more than 2 million
net acres dedicated, primarily in the Granite Wash, Cleveland Sands, Tonkawa,
and Cana Woodford plays. More information about Enogex can be found at

SOURCE OGE Energy Corp.

Contact: Media - OGE, Brian Alford, +1-405-553-3187, or Enogex, Sandra
Longcrier, +1-405-557-6876; Financial - OGE, Todd Tidwell, +1-405-553-3966
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